Keyboard with a trackball



FIG. 1 is the enlarged perspective view of a design for a keyboard witha trackball showing my design;

FIG. 2 is the front elevational view thereof;

FIG. 3 is the rear elevational view thereof;

FIG. 4 is the left side elevational view thereof;

FIG. 5 is the right side elevational view thereof;

FIG. 6 is the top plan view thereof; and,

FIG. 7 is the bottom plan view thereof.

The ornamental design for a keyboard with a trackball, as shown anddescribed.